ci: comment coolify url on each PR

.github/workflows/comment_pr.yml

@@ -0,0 +1,19 @@
+name: PR Comment Workflow
+on:
+  pull_request:
+    types: [opened]
+jobs:
+  comment-on-pr:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Comment coolify preview URL.
+      uses: actions/github-script@v6
+      with:
+        github-token: ${{secrets.GITHUB_TOKEN}}
+        script: |
+          github.rest.issues.createComment({
+            issue_number: context.issue.number,
+            owner: context.repo.owner,
+            repo: context.repo.repo,
+            body: `https://${context.issue.number}.md.monerodevs.org/`
+          })